Use of Signature Analysis to Discriminate Digital Printing Technologies
Abstract:We describe the application of a machine-vision based (ImageXpert) print quality analyzer to derive and identify unique print quality “signatures”. Test patterns generated by seven different state-of-the-art digital (ink jet and dry/liquid xerography) and impact (computer-to-plate offset lithography) printing technologies were quantitatively analyzed in terms of a statistically meaningful number of lines, half-tone dots and text features. In every case examined it is possible to resolve a unique print quality signature which enables differentiation of one printer technology/supplier from another. By this means we demonstrate the potential for definitive print analysis in the context of digital printing forensic document examination
Document Type: Research Article
Publication date: January 1, 2002
For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.
Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.
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